Attachment-holder for sewing-machines



8 A TALBOT & J MATOT ATTACHMENT HOLDER FOR SEWING MACHINES- No. 454,952.Patented June 30, 1891.

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UNITED STATES PATENT- OFFICE.

ADJUTOR TALBOT AND JOHN MATOT, OF NORTH ADAMS, MASSACHUSETTS.

ATTACHMENT-HOLDER FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 454,952, dated June 30,1891. Application filed February 27, 1891. Serial No. 383,129- (ModeL)To all whom it nmy concern.-

Be it known that we, ADJUTOR TALBOT and JOHN MATOT, citizens of theUnited States, residing at North Adams, in the county of Berkshire andState of Massachusetts, have invented certain new and usefulImprovements in Attachment-Holders for Sewing-Ma chines; and we dohereby declare that the following is a full, clear, and exactdescription of the same, reference being had to the annexed drawings,making a part of this specification, and to the letters of referencemarked thereon.

This invention relates to certain new and useful improvements inattachments to sewingmachines, such as presser-feet and the like; and ithas for its objects, among others, to provide simple and efficient meansfor readily and firmly attaching a presser-foot or other device to thepresser-bar of a sewingmachine, and yet make provision for its readyremoval for the purpose of affixing a different attachment, or forotherpurposes. WVe connect the attachment directly to the presserbar, sothat when once fixed it cannot turn around or move up and down on thepresserbar, and, to prevent dropping a ring with-two or more notches,goes down under the pressure of a spring and sets in correspondingnotches in the presser-foot or attachment. The said spring is stopped atits upper end by a movable ring, which is fixed to the presser-bar atthe desired position to give the spring the necessary stiffness. Thelower ring comes down and catches by the pressure of the spring, and isthrown up by a lever, the heel of which works as acam or eccentric. Thethumb-screw which holds the upper ring in its adjusted position at thesame time serves as a thread-cutter.

Other objects and advantages of the invention will hereinafter appear,and the novel features thereof will be specifically defined by theappended claims.

The invention is clearly illustrated in the accompanying drawings,which, with the letters of reference marked thereon, form a part of thisspecification, and in which- Figure l is arear view of ourimprovementsapplied to the foot-bar of a sewing-machine. Fig. 2 is a view at rightangles to Fig. 1. Fig. 3 is a cross-section on the line WV Wof Fig. 1.

Fig. 4 is a perspective view of the lower end of the foot-bar. Fig. 5 isa perspectlve vlow of the key that holds the lower ring in the slotofthe presser-bar. Fig. 6 is a perspective view of the lower ring removed.Flg. 7 is a side view of the presser-foot removed. Fig. 8 is a detail inside elevation, showing the lower ring locked with the presser-foot.

Like letters of reference indicate like parts throughout the severalviews.

Referring now to the details of the drawings by letter, A designates thepresser-bar, which is formed with a practically square portion a, at thelower end of which upon one side is a lug b, and through the lower endat right-angles to this lug is a hole 0, as seen best in Figs. 4 and 3.

d is a slot through the presser-bar, and in this slot is thesubstantially T-shaped keyB, the ends of which fit in the notches e ofthe lower ring C, said notches being formed in the upper edge of thering, as seen in Fig. The upward movement of the lower ring 1s limitedby the engagement of the key with the upper wall of the slot (1.

D is the upper ring, sleeved upon the presser-bar and provided with athumb-screwf, by which it may be held in its adjusted position, and thisthumb-screw is formed with a V- shaped notch g, the edges of which aresharpened to form a thread-cutter, as seen in Fig. 1.

E is a spring arranged between the two rings and surrounding thepresser-bar, the tension or pressure of the spring being regulated bythe position of the upper ring. The lower face of the lower ring 0 isformed with two notches h upon diametrically-opposite sides, the samecoinciding with the slot cl in the foot-bar, as seen in Fig. 1.

F is the attachment, which may be apresser-foot or any of theattachments employed in connection with sewing-machines. It has a shankopen upon one side and fitted to the square portion of the foot-bar. Theupper face is formed with two notchesj, corresponding with the notchesof the lower ring, and upon its under side has a notch k, which isdesigned to receive the lug b at the lower end of the foot-bar, as seenin Fig. 1, where it is engaged therewith. It also has at the sideopposite the open side and between the two notches a thin lug orprojection 1, adapted to fit a corresponding shoulder on on the footbar.The lower ring covers and slides over this lug or projection when thesaid ring is down H is a lever pivoted on the pin n, which is fitted inthe hole 0 of the foot-bar, said lever having a thumb-piece 0, and a camhead or heel, as seen best in Fig. 2. This lever is pivoted at the openside of the attachment, and is so arranged as to act upon the lower edgeof the lower ring, as seen best in Fig. 1. It has two cam portions orfaces, as seen inFigs. 2 and 8.

The operation will be readily understood from the above description'whentaken in connection with the annexeddrawings. When it is desired toaffix or remove the attach-- ment the lever is thrown so as to raise thelower ring to its farthest extent, when the notches thereof will beclear of those of the attachment, which can be readily placed upon thefoot-bar or removed therefrom. Fig. 1 shows the ring raised and theattachment in place. By moving it in the direction of the arrows in saidfigure it readily comes 01f of the foot-bar. When in place the lever isthrown in the oppositedirection to permit the ring to be moved downwardby the spring.

What we claim as new is 1. The combination, with the presser-bar havinglug b, of the attachment having notched upper and lower faces, themovable lower notched ring, the adjustable upper ring, and theinterposed spring, as set forth.

2. The combination, with the presser-bar having lug b, of the attachmenthaving notched upper and lower faces, the movable lower notched ring,the adjustable upper ring, the interposed spring, and the cam-leverpivoted on the presser-bar and having a portion to engage the lowerring, as set forth.

3. The combination, with the presser-bar having lugb at its lower end,and a shoulder m, of the attachment open at one side and having notchesj j and lug Z, the cam-lever, the lower ring, the adjustable upper ring,and the interposed spring, substantially as specified.

4. The combination, with the presser-bar having a lug b and slot, of thelower ring having notches at its upper edge, the attachment having anotch to engage the lug b, and the substantially-T-shaped key working inthe said slot with its ends seated in the notches of the ring,substantially as shown and described.

In testimony that we claim the above we have hereunto subscribed ournames in the presence of two witnesses.

ADJUTOR TALBOT. [L. s] JOHN MATOT. L. s] Witnesses:

CHARLES J. CURRAN, ANGELO MASSUCONE.

